Well just like the title says...
07 Nightster with Screaming Eagle slip ons. I am going to order a DK 587 this week. Would a tuner be necessary at this point? I am getting V&H Sideshots in the future and was planning on getting the tuner then.

Also.. Vance and hines FP3 or Power vision?

Thanks for the input.

 

Possibly your ECM will adjust to the mods without tuning. If not, you have 2 options for fuel injection models, either programmable tuner or dyno. Each bike is unique even with similar modifications....weird but true

 

Since this post is 6 years old, it would be interesting to see what the OP ended up doing and how it's working out.